Hydraulic motor.



W. s. 110111111011 & 0. GRIMWOOD.

HYDRAULIC MOTOR.

APPLICATION FILED MAY 1, 1909.

Patented Au 22, 1911.

4 SHBETS-SHEET 1.

0. Gzim wood W. S. TIGHENOR & O. GRIMWOOD,

HYDRAULIC MOTOR.

APPLIOATION FILED MAY 1, 1909.

Patented Aug. 22, 1911.

4 SHEETS-SHEET 2.

' aazjimwood g -W NNMM I M llin Q: C1 50 W. S. TIGHENOR & 0. GRIMWOQD. HYDRAULIC MOTOR.

APPLICATION FILED MAY 1, 1909.

Patented Aug. 22, 1 91 l.

4 SHEETS-SHEET 3.

COLUMBIA PLANDGIAPM CO.,WASH|NL\ TON. D. c

awe/wind VIZ 372051222027 0. 6311772120 0d W. S. TIGHENOR 6: O. GRIMWOOD.

HYDRAULIC MOTOR. rrLmuroN FILED MAY 1, 1909.

Patented Aug. 22, 1911.

4 SHEETS-BEBE! 4.

5- la I $6 1 WILLIAM S. TICI-IIENOR AND OSCAR GRIMWOOI), OF OWENSVILLE, INDIANA.

HYDRAULIC MOTOR.

Specification of Letters Patent.

Application filed May 1, 1909.

Patented Aug. 22, 1911.

Serial No. 493,383.

To all whom it may concern:

Be it known that we, WILLIAM S. TioHn- NOR and OSCAR GRIMwoon, citizens of the United States, residing at Owensville, in the county of Gibson and State of Indiana, have invented a new and useful Hydraulic Motor; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention belongs to the art of motors, and it pertains particularly to a new and useful hydraulic motor, by which considerable and steady power may be obtained.

Figure 1 is a front elevation of the invention embodying a plurality of hydraulic motors geared together, in order that all of them will operate in unison. Fig. 2 is a top plan view of the apparatus and structure thereof, shown in Fig. 1. Fig. 3 is an end elevation of one of the motors. Fig. 4 is a sectional view upon line 44 of Fig. 1 looking in the direction of the arrow 7), clearly showing the pump cylinder, its piston, and its cooperating. valves, of one of the hydraulic motors. Fig. 5 is a sectional view upon line 55 of Fig. 1 looking in the direction of the arrow 0, clearly showing the interior structural details of one of the hydraulic motors. Fig. 6 is a sectional view upon line 66 of Fig. 5, clearly disclosing the interior structure of one of the hydraulic jacks, and one of the trip or release valves.

In regard to the drawings, 1 denotes a gasolene engine, which may be of any desired type or structure, (there being no invention in this feature of the showing, therefore no detail description is supplied). This gasolene engine is provided with a pulley 2, which is belted to the line shaft 3, by means of the belt connect-ion 4: and the pulley 5.

6 indicates a plurality of hydraulic motors, which are disposed vertically upon a suitable base 7. The line shaft 3 is mounted in suitable bearings 801: the said hydrau lic motors, and is provided with a plurality of gears 9, as shown. These gears 9 mesh with the gears 10, journaled upon the stub shafts 11. These gear wheels 10 are provided with wrist pins 12, to which the pitmen 13 are connected; these pitman rods are pivotally connected to the piston rods 14 of the pumps 15, as shown clearly in Figs. 1 and 4-. The piston rods are provided with the usual pistons 16, which reciprocate in the cylinders 17. Upon the upward stroke of the pistons 16, fluid or liquid is drawn into the cylinders 18 of the suction valves 19, and upon the dqavnward stroke of the pistons 16, the suction valves are closed, and

the check valves 20 are opened, as will be clearly understood. When the suction valves are opened, the fluid or liquid is drawn from the various cisterns 21, of the plurality of hydraulic motors, and, when the drawing of the fluid into the cylinders of the suction valves occurs, the check valves 20 are closed.

The check valves 20 are mounted in suitable cylinders 22, as shown in the drawings.

When the check valves 20 are opened, the

22, and thence into the cylinders 39, by way of the passages or ducts 2 1. Mounted in the cylinders 23 are the trip or release valves 25, which are raised by the right angled portions 26 of the vertically disposed rods 27 as will be clearly understood. The trip or release valves are returned to their normal lower positions by gravity,,that is to say, when the rods 27 are in the act of lowering. The liquid or fluid flows back into the cisterns when the trip or release valves are opened. The rods 27 are pivoted to the oscillating members'28, by means of the pins 29, as shown clearly in Figs. 3 and 6 of the drawings. These oscillating members are pivoted upon studs 30 of the standards 31, which project upwardly from the casings 32 of the motor casings, as shown clearly in the drawings. These standards 31 support the line shafts 33 and 3, as illustrated. The oscillating members are operated by means of the cams 34: (which are mounted upon the line shaft 33), in order to raise or lower the rods 27, thereby opening or closing the trip or release valves. The oscillating members are provided with anti-friction rollers 35, which engage and travel about the said cams. The cams, upon either end of the line shaft 33, are provided with wrist pins 36, to which the pitman rods 37 are pivoted; these pitman rods 37 are pivoted to the piston rods 38 of the hydraulicjacks 39, and carried by said piston rods are the usual pistons 40, of any desired construction. The pumps and the jacks are arranged in such wise, that as the pump pistons 16 their upward strokes.

tons will be prevented from assuming positions, which will simply be forcing liquid through the passage 24 and the barrel 25 without actuating the pistons 40.

The pistons of the hydraulic jacks are automatically raised whenever pressure is generated beneath them, while the valve 25 is controlled by the cams 34 independently of the pistons 40. However, this fluid pressure is produced by the actions of the pump pistons, which forces the fluid up through the passages 24, and when this fluid pressure is produced, the pistons 40 of the jacks immediately respond. This fluid pressure remains substantially uniform, therefore the pistons 40 are steadily and uniformly actuated, the same making the downward strokes as the pump pistons are making method, a considerable and steady power is transmitted from the shaft 33 through the chain of gears to the shaft 57 uniformly.

There are four hydraulic motors in number, 'as shown in. the drawings, but it is to be understood, that they may be increased or decreased, as desired. The standards 31 of the two intermediate hydraulic motors are provided with over-hanging portions 41, which form further supports for the line shaft '33, and are provided with bearings 42, in order that additional steadying means may be supplied to the line shaft 33. The '.line :shaft 33, in the present instance, is-

sectio'nal, there being three sections 43 and 44. The sections 43 are supported in bearings 45 of the standards 31 of the hydraulic motors at either end of the apparatus, and

in the bearings 42 of the over-hanging portions, while the section 44 is supported in bearings 46 of the standards 31 of the in-' termediate hydraulic motors, as shown. The section 44 is further supported in bearings 47 of the upright member 48, as shown.

The cams of the intermediate hydraulic motors are carried by the ends of the section 44. Carried by the ends 49 of the sections 43 of the said line shaft 33, are the disks 50, between which and the said cams of the intermediate hydraulic motors, wrist pins 5-1 are disposed, to which the pitman rods 37 of the hydraulic jacks of the inter mediate hydraulic motors are pivoted, as

shown clearly in the drawings.

The upright member 48 is hollowed out, as shown at 52, in dotted lines of Fig. 3, and upon the upper face of the upright member 48 is a plurality of bearings 53, for

" the shafts 54, 55,56 and 57, as shown clearly in Figs. 2 and 3 of the drawings. J ournaled upon and rotatable with the shaft 54 is a pair of gears 58 and '59. The gear 58 meshes with the spur gear 44 carried by and rotatable with the section 44 of the By virtue of this shaft 55. The gear 58 is smaller in diameter than the gear 59, while thegear 60 is slightly larger in diameter than the gear 58, or in other words, the gear 60 is of a diameter intermediate the diameters of the gears 58 and 59. Also carried by the shaft 55 is a gear 61,, which is larger in diameter than the gear 59,"'but which is less in diameter than the gear 62 carried by the shaft 56. The gear 61 meshes with a gear 63, also carried by the shaft 56. This gear 63 is less in diameter than any one of the gears 59, 61 and 62, but larger in diameter than either one of the gears 58, 60' and 64. The gear 64 is carried by and rotatable with the shaft 57 upon which a suitable pulley 65 is journaled (in other words a band wheel), and to which pulley or band wheel 65 any suitable machinery (not shown) may be belted, for the purpose of receiving power from the plurality of hydraulic motors.

All the piston rods are supplied with suitable packing glands 66, through which they move. The cylinders of the trip release valves, the suction, the check valves and the hydraulic jacks are all provided with screw-threaded plugs 67, which may be removed for the purpose of obtaining access to the cylinders, and to the valves and pistons therein, for the purpose of cleaning the structure. The outlets between the cylinders of the trip or release valves and the cisterns, are located above the level of the liquid in the cisterns, in order to prevent backward throw of the liquid, during the opening and closing of the check valves, especially when the suction valves :are in operation. 7

The cisterns of the various hydraulic motors are all connected (by short pipes 68) to the fluid or liquid main pipe 69, through which the fluid or liquid, from any suitable source of supply (not shown), flows to the various cisterns.

The short pipes 68 are provided with suitable valves 70, by which the supply to any special hydraulic motor of the plurality thereof, may be cut off when desired. WVhile the fluid or liquid main pipe 69 is provided with a valve 71, in order that the entire :supply may be cut off, or vice-versa.

Should the machinery for any reason whatsoever stop, and the pump should continue to operate, thereby increasing the pressure to such a height that it would be dangerous, the safety valves 72 (of any desired well-known structure) would allow required properties for this purpose, in preference to any other fluid, 1n order to supply lubricant to the entire moving parts of the apparatus, that is to say, the several valves, the pumps and the hydraulic jacks. From the foregoing, the essential features, elements and the operation of the device, together with the simplicity thereof, will be clearly apparent.

The cylinders of the hydraulic jacks should be, in practice, provided with copper cups and made of any suitable metal, preferably steel, and provided with screw bottoms. The valves, in practice, should be made of steel or any other suitable metal, as well as the valve seats, which should be screwed in place, or in any other suitable manner, as desired.

When the motor 1 is driven the shafts 3 will be rotated, and motion will be imparted by the gears 9 to the gears 10 thereby driving the pump rods 14 which when driven will force the liquids in the cisterns 21 into the cylinders 18 and again into the passage 24 so as to drive the pistons 40, which are geared through the shaft 33, and the gear train with the driven pulley 65.

By the employment of this hydraulic apparatus, the applicant desires principally to dispense with the use of reducing gears for obvious reasons, for instance by cutting out one or two of the hydraulic devices, the maximum driving force (which is generated and multiplied by a minimum motive power) may be reduced without disturbing the motive power employed. To cut out one or two, or may be three of the hydraulic devices, the pitmen 13 of the pump pistons may be disconnected from their wrist pins on the gears 10, and the fluid pressure cut off by any one of the valves 70. Another obvious reason for dispensing with reducing gears is to run more than one small ma chine device, by the hydraulic apparatus.

To run more than one small machine device, they may be connected by belt connections to the disks 50 of the intermediate hydraulic devices.

Having thus fully described the invention, what is claimed, as new and useful, 1s:

In a hydraulic motor, a primary motor, a shaft geared thereto, a plurality of pump pistons geared to the shaft, a plurality of motor casings having cylinders for the pump pistons, cisterns within the casings, valve cylinders in the casings in communication with the cisterns, check valves controlling communications between the cisterns and pump cylinders and between the latter and the delivery, motor piston cylin ders in the casings, motor pistons working therein, release valve cylinders, including passage ways between them and the check valve cylinders, said motor piston cylinders being in communication with the passage ways midway their length, said motor pistons being actuated by the pressure of the fluid in the passage ways, said release valve cylinders having communications with the cisterns, release valves controlling the communication between their cylinders and the cisterns, and reciprocating plunger rods having right angled lower portions to engage the lower ends of the release valve, a shaft mounted in bearings above the first shaft, the plunger rods having connections with the second shaft, whereby the release valves may be raised.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM S. TIOHENOR. OSCAR GRIMWOOD.

Witnesses:

HENRY JOHNSON, HENRY MAUCK.

Copies of this natent may be obtained for five cents each, by addressing the Commissioner of latents Washington, D. C. 

